I need a manual for this microwave.

I would suggest you check the door switches inside the microwave oven just below the keypad, rectangular in shape. The switches are normally open or closed, set meter to ohms, unhook lead from one side and test with door open and closed. If readings are the same both ways the switch is defective. "check all switches"

The problem is caused by one or two bad door switches that will need to be replaced.

If you mean the user manual, it's here.

If you have trouble with the fan, I'd check the door switches first.

Then if you need a fan or other parts, you can order parts from Encompass here or you can call them toll-free at 866-779-5835.

Go to this web site.
http://www.emersonelectronics.ca/emerson/en/support/index?page=manuals
where it asks you to input your product code, type in "mw8115" (without the quotes) then click "go"

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I coudl only find a Canadian support website.
http://www.emersonelectronics.ca/emerson/en/support/



Toll Free Customer Support: 1-800-663-5954

In U.S.A.
For all product purchased in the U.S., please contact:
Emerson Radio Corporation
9 Entin Road
P.O. Box 430
Parsippany, New Jersey 07054-0430

If this is freestanding m/w:
1. disconnect from outlet
2. take the cover off.
3. light bulb located on right upper corner.

I’m happy to help further over the phone at https://www.6ya.com/expert/vitaliy_f406165329c75ede

That part number is 252200200010 and the best place to order it is Tritronics.

You can also call them at 866-779-5835.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

Press and hold the STOP/CLEAR pad for three seconds.

Many Emerson microwave owner's manuals are available for free download here.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

While your exact model is not listed, there are several manuals you can download here at no charge.

I would bet the closest ones would be model MW8115SS and MW8117W.

We're happy to help and we appreciate your thoughtful rating of our answer.

If you don't have your manual, you can download it here:
http://emersonradio.com/owners/MWO%20manual/MW8115SS.PDF

The manual will also have contact info for Emerson in case you want to check with them on this.

The magnetron may be going bad, and they usually have a warranty of several years on that.

We're happy to help and we appreciate your thoughtful rating of our answer.